1
- denoting a person, animal, or thing that performs a specified action or activity表示“做…动作的人（或动物、物）”, “从事…活动的人（或动物、物）”：
farmer
sprinkler.
2
- denoting a person or thing that has a specified attribute or form表示“有…特性或外形的人（或物）”：
foreigner
two-wheeler.
3
- denoting a person concerned with a specified thing or subject表示“与…有关的人”, “做…学问的人”：
milliner
philosopher.
4
- denoting a person belonging to a specified place or group表示“…地方的人”, “属于…群体的人”：
city-dweller
New Yorker.
词源
Old English -ere, of Germanic origin.
- forming the comparative of adjectives (as in bigger) and adverbs (as in faster )［构成形容词和副词的比较级］：
bigger, faster.
词源
Old English suffix -ra (adjectival), -or (adverbial), of Germanic origin.
- forming nouns used informally, usually by distortion of the root word［构成非正式场合使用的名词, 常通过改变根词含义的方法进行］：
footer
rugger.
词源
probably an extended use of -ER1 ; originally Rugby School slang, later adopted at Oxford University, then extended into general use.
- forming frequentative verbs such as glimmer, patter构成反复动词：
glimmer, patter.
词源
Old English -erian, -rian, of Germanic origin.
forming nouns ［构成名词］
1
- such as sampler例如sampler. 比较
-AR1 . - ORIGIN: ending corresponding to Latin -aris.
1.1
- such as butler, danger例如butler, danger.
- ORIGIN: ending corresponding to Latin -arius, -arium.
1.2
- such as border例如border.
- [ORIGIN: ending corresponding （via Old French -eure ） to Latin -atura.]
1.3
- such as laver例如laver. 见
LAVER2 . - [ORIGIN: ending corresponding （via Old French -eor ） to Latin -atorium.]
2
- equivalent to
-OR1 ［相当于-OR1］。
词源
via Old French or Anglo-Norman French (see above).